EP1115516B1 - Apparatus and method for bending tubular or rod-shaped material - Google Patents

Apparatus and method for bending tubular or rod-shaped material Download PDF

Info

Publication number
EP1115516B1
EP1115516B1 EP99969360A EP99969360A EP1115516B1 EP 1115516 B1 EP1115516 B1 EP 1115516B1 EP 99969360 A EP99969360 A EP 99969360A EP 99969360 A EP99969360 A EP 99969360A EP 1115516 B1 EP1115516 B1 EP 1115516B1
Authority
EP
European Patent Office
Prior art keywords
movable roller
bending
roller
conveying element
arm
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP99969360A
Other languages
German (de)
French (fr)
Other versions
EP1115516A1 (en
Inventor
Johannes Theodorus Scholten
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dynobend Bv
Original Assignee
BUSSCHERS METAALBEDRIJF BV
Metaalbedrijf Busschers BV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BUSSCHERS METAALBEDRIJF BV, Metaalbedrijf Busschers BV filed Critical BUSSCHERS METAALBEDRIJF BV
Publication of EP1115516A1 publication Critical patent/EP1115516A1/en
Application granted granted Critical
Publication of EP1115516B1 publication Critical patent/EP1115516B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/08—Bending rods, profiles, or tubes by passing between rollers or through a curved die

Description

The invention relates to an apparatus for bending tubular or rod-shaped material, comprising a bending head provided with at least one rigidly mounted roller, at least one movable roller, suspension means, a steering plate, driven by motors, for enabling the movable roller to translate in a first translation direction, to translate in a second translation direction and to rotate around a rotation axis and a conveying element for conveying the material to be machined along its principal axis to the bending head.
An apparatus of this type is known from EP-A-0 032 795. In the known apparatus, the movable roller is suspended in the steering plate. This means that the steering plate and the steering motors are all mounted in front of the rigidly mounted roller, where they may form an obstacle which limits the performance of the apparatus. The apparatus according to the invention is characterized in that the at least one movable roller is attached to a first end of an arm, the steering plate is attached to a second end of the arm and the suspension means, supporting the arm, is supported in a spherical bearing, positioned between the first and the second end. In this way, the steering plate and the motors can be mounted completely out of the way of the bending head, forming no hindrance to the bending head.
Although it is possible to realise any shape by merely using the movable roller and the steering plate, it may be of advantage, for example while processing thin-walled tube that may collapse easily, to support axial movements of the tube to be processed near the movable roller. A favourable embodiment of the apparatus is thereto characterized in that the rigidly mounted roller is provided with drive means for supporting axial movements made by the conveying element.
It may also be of advantage, for example while making two bends that are not situated in one plane, to rotate the tube in a controlled manner. A favourable embodiment of the inventive apparatus is thereto characterized in that the conveying element is provided with drive means for rotating the material to be machined round its principal axis.
Material to be bent is pushed into the groove of a movable roller while being bent. A favourable embodiment which exploits this fact is characterized in that the movable roller comprises only one roll. With one roll it is still more easy to replace the bending head when another type of material is to be bent.
The invention also relates to a method for bending of tubular or rod-shaped material, using the apparatus as defined in claim 1.
A favourable realisation of the inventive method is characterized in that in the bending process the material to be bent is rotated round its principal axis by the conveying element in order to support the movements of the movable roller.
The invention will be further explained with reference to the following figures, in which:
Fig. 1
schematically represents, in top view, a possible embodiment of the bending apparatus;
Fig. 2
schematically represents, in top view, a possible embodiment of the bending head;
Fig. 3
schematically represents, in side view, a possible embodiment of the steering element.
Fig. 1 schematically represents, in top view, a possible embodiment of the bending apparatus, where the material 1 to be processed is conveyed with the aid of a conveying element 2 to a bending head 3. Conveying element 2 comprises a slide 4, which may run along a bed 5, which bed 5 is mounted onto a frame 6. Conveying element 2 further comprises a clamp, not shown in Fig. 1 and well-known in the art, for clamping the material 1 to be processed, a first motor 7, for moving slide 4 towards bending head 3, a second motor 8, for rotating the material 1 to be processed together with the clamp round its principal axis, a first measuring instrument 9, for measuring the movement of the slide and a second measuring instrument 10, for measuring the rotation of the material to be processed. First measuring instrument 9 and second measuring instrument 10 are electromagnetic transducers, well-known in the art or electro-optical transducers integrated into slide 4. Measuring instrument 9 and second measuring instrument 10 determine the tolerances in the final product as produced by the apparatus.
Bending head 3 consists of a rigidly mounted roller 11 and a movable roller 12. Movable roller 12 is connected, via an arm 13 and suspension means 14 to a steering element 15, which may be steered such that movable roller 12 may translate in the plane of the drawing, perpendicular to the plane of the drawing, can rotate round arm 13 and moreover can perform linear combinations of these movements. By moving movable roller 12 in a suitable manner, while at the same time element 4 conveys the material to be processed and, if necessary, rotates it round its principle axis, at least substantial all types of curvatures can be given to the material 1 to be processed. For every product to be developed it is necessary to produce some test specimen, as for example a tube rebounds after bending, dependent on the type of material and the thickness of the wall, but this is in fact true for every type of bending apparatus.
Fig. 2 schematically represents, in top view, a possible embodiment of the bending head 3, together with suspension means 14 and steering element 15. Steering element 15 comprises a system of three motors and three spindles, for translating and rotating arm 13, the movements of which are transferred to movable roller 12 via the suspension means 14, which are supported by a spherical bearing.
Movable roller 12 has in fact only one roll, in which a groove is made, which groove encloses half of the material 1 to be processed. This substantially prevents the material 1 to be processed from buckling or deteriorating otherwise, while for movable roller 12 a large degree of freedom is guaranteed. Rigidly mounted roller 11 consists of four rolls, also provided with grooves, which are dimensioned such that the material 1 to be processed is supported all round yet it still remains possible to rotate the material 1 to be processed round its principal axis. Strictly speaking it is not necessary to drive the four rolls of rigidly mounted roller 11, but in this embodiment the rolls are driven and they are moreover mutually coupled with toothed wheels, mounted below the rolls. The advantage is that the material 1 to be processed deteriorates to a lesser extent and a sudden buckling of for example a thin-walled tube between the conveying element 2 the rigidly mounted roller 11 is prevented.
Rigidly mounted roller 11, together with the toothed wheels below it, is built as a group that can easily be removed to be exchanged by another group if another type of material is to be processed. In addition, movable roller 13 is connected to arm 13 such that it is readily exchanged, for example with one bolt. By exchanging the entire bending head it is possible to mount for example smaller rolls with a smaller centre distance, such that finer material may be processed and that smaller radii may be realized. It is also possible to make a special bending head for special, non-circular material like strip. It is true that the strip-shaped material cannot be rotated within rigidly mounted roller 11, but all bends commonly used in processing strip can be made solely by manipulating movable roller 12.
Incidentally, it may be of advantage to provide movable roller 13 with two rolls, notwithstanding the fact that only one roll is actively used in the bending process. This is for example the case if a number of bends must be made to the left and to the right. With one roll this is possible by rotating the material 1 every time 180 degrees with the aid of conveying element 2 or by moving movable roller 12 every time underneath the material 1 to be processed, but time can be saved by using two rolls.
Fig. 3 schematically represents, in side view, a possible embodiment of the steering element 15. Steering element 15 comprises three motors 16,17,18, on one side mounted with hinges 19,20,21 to a frame 6, on another side provided with spindles 22,23,24, which spindles cooperate with screw-threaded holes in spherical bearings 25,26,27. With this combination a plate 28 can be translated in a vertical direction by steering motor 16, or translated in a horizontal direction by steering motors 17,18 in the same manner, or rotated around spherical bearing 25 by steering motors 17,18 in an opposite manner. Arm 13 is connected to the centre of plate 28 with the aid of a universal joint, not shown in the figure, such that the translations and the rotation can be exactly followed and passed to movable roller 12 via suspension means 14. Both the universal joint, connected to the centre of plate 28 and the spherical bearing 25 are mounted at the highest possible position within frame 6, as a consequence of which arm 13 runs practically parallel to the material 1 to be processed. This means that the material 1 to be processed is always situated in an optimal fashion in movable roller 12. For spindles 22,23, 24, ball-guided spindles have been chosen, because any clearance here will immediately influence the tolerances of the product.

Claims (6)

  1. Apparatus for bending tubular or rod-shaped material (1), comprising a bending head (3) provided with at least one rigidly mounted roller (11), at least one movable roller (12), suspension means (14), a steering plate (28), driven by motors (16,17,18), for enabling the movable roller (12) to translate in a first translation direction, to translate in a second translation direction and to rotate around a rotation axis and a conveying element (2) for conveying the material (1) to be machined along its principal axis to the bending head (3), characterized in that the at least one movable roller (12) is attached to a first end of an arm (13), the steering plate (28) is attached to a second end of the arm (13) and the suspension means (14), supporting the arm, is supported in a spherical bearing, positioned between the first and the second end.
  2. Apparatus according to claim 1, characterized in that the rigidly mounted roller (11) is provided with drive means for supporting axial movements made by the conveying element.
  3. Apparatus according to claim 1 or 2, characterized in that the conveying element (2) is provided with drive means (8) for rotating the material (1) to be machined round its principal axis.
  4. Apparatus according to one of the claims 1 to 3, characterized in that the movable roller (12) comprises only one roll.
  5. Method for bending of tubular or rod-shaped material (1), using an apparatus according to claim 1.
  6. Method according to claim 5, characterized in that in the bending process the material (1) to be bent is rotated round its principal axis by the conveying element (2) in order to support the movements of the movable roller (12).
EP99969360A 1998-09-24 1999-09-21 Apparatus and method for bending tubular or rod-shaped material Expired - Lifetime EP1115516B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL1010174 1998-09-24
NL1010174A NL1010174C1 (en) 1998-09-24 1998-09-24 Apparatus and method for bending tubular and rod-shaped material.
PCT/NL1999/000587 WO2000016921A1 (en) 1998-09-24 1999-09-21 Apparatus and method for bending tubular or rod-shaped material

Publications (2)

Publication Number Publication Date
EP1115516A1 EP1115516A1 (en) 2001-07-18
EP1115516B1 true EP1115516B1 (en) 2002-10-16

Family

ID=19767874

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99969360A Expired - Lifetime EP1115516B1 (en) 1998-09-24 1999-09-21 Apparatus and method for bending tubular or rod-shaped material

Country Status (4)

Country Link
EP (1) EP1115516B1 (en)
DE (1) DE69903574T2 (en)
NL (1) NL1010174C1 (en)
WO (1) WO2000016921A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JOP20190083A1 (en) 2008-06-04 2017-06-16 Amgen Inc Fgf21 mutant fusion polypeptides and uses thereof
EP2628918B1 (en) 2012-02-15 2020-04-22 Ford Global Technologies, LLC Method for operating an internal combustion engine with a turbocharger arrangement and control unit for an engine with a turbocharger arrangement
RU206818U1 (en) * 2019-05-22 2021-09-29 Российская Федерация, от имени которой выступает Государственная корпорация по космической деятельности "РОСКОСМОС" PIPE BENDING DEVICE

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3986381A (en) * 1975-05-05 1976-10-19 Vladimir Nikolaevich Shubin Bending head for a tube bending machine
JPS56102319A (en) * 1980-01-21 1981-08-15 Inoue Mtp Co Ltd Method and apparatus for bending long sized material
JPS6182932A (en) * 1984-09-28 1986-04-26 Hashimoto Forming Co Ltd Method and device for continuously bending long-sized member along its axial line
DE19717232A1 (en) * 1997-04-24 1998-10-29 Suban Ag Method and device for three-dimensional bending of hollow metal profiles

Also Published As

Publication number Publication date
DE69903574D1 (en) 2002-11-21
DE69903574T2 (en) 2003-07-31
EP1115516A1 (en) 2001-07-18
NL1010174C1 (en) 2000-03-27
WO2000016921A1 (en) 2000-03-30

Similar Documents

Publication Publication Date Title
US4766752A (en) Machine tool for the production of tubular components
US6434994B2 (en) Roll-forming machine
KR930021279A (en) Rolled stand
EP1115516B1 (en) Apparatus and method for bending tubular or rod-shaped material
EP0897782B1 (en) Lathe charger
JP2951012B2 (en) Bending equipment
US5901938A (en) Structure of support of a focusing head of a laser beam of a machine
JP3274803B2 (en) Roller straightening machine for strip material
JPH04182034A (en) Strip edge part forming roll of welded steel tube
US1119044A (en) Straightening-machine.
KR102643974B1 (en) A vertical lathe with tailstock
JPH09290342A (en) Feed screw support method in sheet metal working machine and machine tool
JPH0641114B2 (en) Industrial robots
SU1750781A1 (en) Roller sheet-metal bending machine
EP1082183B1 (en) Bearing for rolling stands with crossing rolls
CN1078513C (en) Coordinate machine
JPH0140693B2 (en)
JPH1157898A (en) Work transfer device of transfer press
SU1168350A1 (en) Routing machine
SU1212653A1 (en) Apparatus for rotary pressing-out of thin-wall shells
SU1555061A1 (en) Arrangement for feeding barstock
SU1269868A1 (en) Arrangement for cleaning external surface of cylindrical articles
RU2076796C1 (en) Roller stand
SU1801068A3 (en) Device for clamping rolled metal
SU1655621A1 (en) Apparatus for end face rolling

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20010316

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

Kind code of ref document: A1

Designated state(s): BE DE NL

17Q First examination report despatched

Effective date: 20010724

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE NL

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69903574

Country of ref document: DE

Date of ref document: 20021121

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030717

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

NLS Nl: assignments of ep-patents

Owner name: DYNOBEND B.V.

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 69903574

Country of ref document: DE

Representative=s name: RUEGER ABEL PATENTANWAELTE PARTGMBB, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 69903574

Country of ref document: DE

Representative=s name: RUEGER ABEL PATENT- UND RECHTSANWAELTE, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 69903574

Country of ref document: DE

Representative=s name: RUEGER, BARTHELT & ABEL, DE

Ref country code: DE

Ref legal event code: R081

Ref document number: 69903574

Country of ref document: DE

Owner name: NIVORA IP B.V., NL

Free format text: FORMER OWNER: DYNOBEND B.V., HAAKSBERGEN, NL

REG Reference to a national code

Ref country code: NL

Ref legal event code: PD

Owner name: NIVORA I.P. B.V.; NL

Free format text: DETAILS ASSIGNMENT: CHANGE OF OWNER(S), ASSIGNMENT; FORMER OWNER NAME: DYNOBEND B.V.

Effective date: 20170331

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20180920

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20180928

Year of fee payment: 20

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20180928

Year of fee payment: 20

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69903574

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MK

Effective date: 20190920

REG Reference to a national code

Ref country code: BE

Ref legal event code: MK

Effective date: 20190921